With the annual Electronic Entertainment Expo once again upon us, this week has been a flood of gaming hardware and software news. On the PC front, AMD is once again sponsoring PC Gamer&rsquo;s PC Gaming Show, and while the company isn&rsquo;t making quite as large of a presence this year &ndash; having just announced a bunch of tech at Computex &ndash; AMD is still attending E3 to tease a bit of hardware. Announced in a press release that&rsquo;s going out at the same time as the PC Gaming Show starts, AMD is very briefly teasing the next two Polaris-based Radeon cards: the Radeon RX 470 and the Radeon RX 460.